Case-based reasoning as a computer aid to diagnosis

Carey E. Floyd Jr.; Joseph Y. Lo; Georgia D. Tourassi

doi:10.1117/12.348603

21 May 1999 Case-based reasoning as a computer aid to diagnosis

Carey E. Floyd Jr., Joseph Y. Lo, Georgia D. Tourassi

Proceedings Volume 3661, Medical Imaging 1999: Image Processing; (1999) https://doi.org/10.1117/12.348603
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

A Case-Based Reasoning (CBR) system has been developed to predict the outcome of excisional biopsy from mammographic findings. CBR is implemented by comparing the current case to all previous cases and examining the outcomes for those previous cases that match the current case. Patients from breast screening who have suspicious findings on their diagnostic mammogram, are candidates for biopsy. The false positive rate for the decision to biopsy is currently between 66% and 90%. The CBR system is designed to support the decision to biopsy. The mammograms are read by clinicians using a standard reporting lexicon (BI- RADS^TM). These findings are compared to a database of findings from cases with known outcomes (from biopsy). The fraction of similar cases that were malignant is returned. The clinician can then consider this result when making the decision regarding biopsy. The system was evaluated using round-robin sampling scheme and performed with a Receiver Operating Characteristic area of 0.77.

Citation Download Citation

Carey E. Floyd Jr., Joseph Y. Lo, and Georgia D. Tourassi "Case-based reasoning as a computer aid to diagnosis", Proc. SPIE 3661, Medical Imaging 1999: Image Processing, (21 May 1999); https://doi.org/10.1117/12.348603

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